Move "ar" flags to config.mk to allow for silent "make -s"
Based on patch by Mike Frysinger, 20 Jun 2006
diff --git a/board/exbitgen/Makefile b/board/exbitgen/Makefile
index 7a39592..5e297af 100644
--- a/board/exbitgen/Makefile
+++ b/board/exbitgen/Makefile
@@ -34,7 +34,7 @@
 SOBJS	:= $(addprefix $(obj),$(SOBJS))
 
 $(LIB):	$(OBJS) $(SOBJS)
-	$(AR) crv $@ $^
+	$(AR) $(ARFLAGS) $@ $^
 
 clean:
 	rm -f $(SOBJS) $(OBJS)